Sau: Yamin Li thiab Houcheng Liu, thiab lwm yam, los ntawm College of Horticulture, South China Agriculture University

Nqe lus Source: Greenhouse Horticulture

Cov hom chaw ua haujlwm horticulture feem ntau suav nrog cov tsev cog khoom yas, hnub ci tsev cog khoom, ntau lub tsev cog khoom, thiab cov chaw cog qoob loo.Vim hais tias cov vaj tse thaiv cov teeb pom kev zoo rau qee qhov, muaj qhov tsis txaus sab hauv tsev, uas ua rau txo cov qoob loo thiab zoo.Yog li ntawd, lub teeb ntxiv ua lub luag haujlwm tseem ceeb hauv cov qoob loo zoo thiab muaj txiaj ntsig zoo ntawm cov chaw, tab sis nws kuj tau dhau los ua qhov tseem ceeb hauv kev nce kev siv hluav taws xob thiab cov nqi khiav lag luam hauv lub chaw.

Rau lub sijhawm ntev, cov khoom siv hluav taws xob siv hluav taws xob siv nyob rau hauv thaj chaw horticulture feem ntau suav nrog kev kub siab sodium teeb, fluorescent teeb, hlau halogen teeb, teeb incandescent, thiab lwm yam, qhov tsis zoo yog cov khoom siv hluav taws xob siab, kev siv hluav taws xob siab thiab kev ua haujlwm siab.Txoj kev loj hlob ntawm lub cim tshiab lub teeb emitting diode (LED) ua rau nws muaj peev xwm siv hluav taws xob tsis tshua muaj hluav taws xob teeb pom kev zoo hauv thaj chaw horticulture.LED muaj qhov zoo ntawm kev ua haujlwm siab photoelectric hloov dua siab tshiab, DC lub zog, lub ntim me me, lub neej ntev, kev siv hluav taws xob tsawg, ruaj khov wavelength, tsis tshua muaj hluav taws xob hluav taws xob thiab kev tiv thaiv ib puag ncig.Piv nrog rau high-pressure sodium teeb thiab fluorescent teeb uas nquag siv tam sim no, LED tsis tuaj yeem kho lub teeb kom muaj nuj nqis thiab zoo (qhov feem ntawm ntau lub teeb ci) raws li qhov xav tau ntawm cov nroj tsuag loj hlob, thiab tuaj yeem irradiate cov nroj tsuag nyob ze vim rau nws lub teeb txias, Yog li, tus naj npawb ntawm cov khaubncaws sab nraud povtseg thiab qhov chaw siv tau zoo tuaj yeem txhim kho, thiab kev ua haujlwm ntawm kev txuag hluav taws xob, kev tiv thaiv ib puag ncig thiab qhov chaw siv tau zoo uas tsis tuaj yeem hloov tau los ntawm ib txwm siv lub teeb ci tuaj yeem ua tiav.

Raws li cov txiaj ntsig zoo no, LED tau ua tiav zoo siv hauv qhov chaw horticultural teeb pom kev zoo, kev tshawb fawb yooj yim ntawm kev tswj hwm ib puag ncig, cog cov ntaub so ntswg kab lis kev cai, cog cog cog qoob loo thiab aerospace ecosystem.Nyob rau hauv xyoo tas los no, kev ua tau zoo ntawm LED teeb pom kev zoo yog txhim kho, tus nqi poob qis, thiab txhua yam khoom siv nrog cov wavelengths tshwj xeeb tau tsim maj mam, yog li nws daim ntawv thov hauv kev ua liaj ua teb thiab biology yuav dav dua.

Tsab ntawv xov xwm no tau nthuav tawm cov xwm txheej tshawb fawb ntawm LED hauv thaj chaw horticulture, tsom mus rau kev siv LED ntxiv lub teeb nyob rau hauv lub teeb biology foundation, LED loj hlob teeb rau cog lub teeb tsim, khoom noj khoom haus zoo thiab cov nyhuv ntawm ncua kev laus, kev tsim kho thiab daim ntawv thov. ntawm lub teeb pom kev zoo, thiab kev soj ntsuam thiab kev cia siab ntawm cov teeb meem tam sim no thiab kev cia siab ntawm LED supplemental teeb technology.

Cov nyhuv ntawm LED ntxiv teeb rau kev loj hlob ntawm cov qoob loo horticultural

Kev tswj cov teebmeem ntawm lub teeb ntawm cov nroj tsuag kev loj hlob thiab kev loj hlob muaj xws li noob germination, qia elongation, nplooj thiab hauv paus kev loj hlob, phototropism, chlorophyll synthesis thiab decomposition, thiab paj induction.Cov teeb pom kev zoo ib puag ncig hauv lub chaw muaj xws li lub teeb siv, lub voj voog lub teeb thiab spectral faib.Cov ntsiab lus tuaj yeem hloov kho los ntawm cov khoom siv dag zog ntxiv yam tsis muaj kev txwv ntawm huab cua.

Tam sim no, muaj tsawg kawg peb hom photoreceptors nyob rau hauv cov nroj tsuag: phytochrome (absorbing lub teeb liab thiab deb liab), cryptochrome (absorbing xiav lub teeb thiab nyob ze lub teeb ultraviolet) thiab UV-A thiab UV-B.Kev siv lub teeb pom kev tshwj xeeb rau irradiate cov qoob loo tuaj yeem txhim kho cov photosynthetic efficiency ntawm cov nroj tsuag, ua kom lub teeb morphogenesis, thiab txhawb kev loj hlob thiab kev loj hlob ntawm cov nroj tsuag.Liab txiv kab ntxwv lub teeb (610 ~ 720 nm) thiab xiav violet lub teeb (400 ~ 510 nm) tau siv rau hauv cov nroj tsuag photosynthesis.Siv cov thev naus laus zis LED, lub teeb monochromatic (xws li lub teeb liab nrog 660nm ncov, lub teeb xiav nrog lub ncov 450nm, thiab lwm yam) tuaj yeem tawg nyob rau hauv txoj kab nrog lub zog nqus band ntawm chlorophyll, thiab spectral domain dav tsuas yog ± 20 nm.

Nws yog tam sim no ntseeg hais tias lub teeb liab-txiv kab ntxwv yuav ua rau kom loj hlob ntawm cov nroj tsuag, txhawb lub tsub zuj zuj ntawm qhuav teeb meem, tsim ntawm qhov muag teev, tubers, nplooj ntoos hlav thiab lwm yam kab mob ntawm cov nroj tsuag, ua rau cov nroj tsuag blooms thiab dais txiv hmab txiv ntoo ua ntej, thiab ua si. lub luag haujlwm tseem ceeb hauv kev cog qoob loo xim;Lub teeb xiav thiab violet tuaj yeem tswj cov phototropism ntawm cov nplooj nplooj, txhawb stomata qhib thiab chloroplast txav, inhibit qia elongation, tiv thaiv cov nroj tsuag lengthening, ncua kev cog paj, thiab txhawb kev loj hlob ntawm vegetative kab mob;Kev sib xyaw ua ke ntawm cov xim liab thiab xiav LEDs tuaj yeem them nyiaj rau lub teeb tsis txaus ntawm ib qho xim ntawm ob thiab tsim lub ncov spectral absorption uas yog qhov yooj yim nrog cov qoob loo photosynthesis thiab morphology.Lub teeb lub zog siv tus nqi tuaj yeem ncav cuag 80% mus rau 90%, thiab lub zog txuag hluav taws xob tseem ceeb.

Nruab nrog LED ntxiv teeb nyob rau hauv qhov chaw horticulture tuaj yeem ua tiav qhov tseem ceeb hauv kev tsim khoom.Cov kev tshawb fawb tau pom tias cov txiv hmab txiv ntoo, tag nrho cov zis thiab qhov hnyav ntawm txhua txiv lws suav nyob rau hauv lub teeb ntxiv ntawm 300 μmol / (m²·s) LED strips thiab LED tubes rau 12h (8:00-20:00) yog qhov tseem ceeb. nce.Lub teeb ntxiv ntawm LED sawb tau nce 42.67%, 66.89% thiab 16.97% raws li, thiab lub teeb ntxiv ntawm LED raj tau nce 48.91%, 94.86% thiab 30.86% feem.LED ntxiv lub teeb ntawm LED loj hlob teeb pom kev zoo thaum lub sij hawm loj hlob tag nrho [qhov piv ntawm lub teeb liab thiab xiav yog 3: 2, thiab lub teeb siv zog yog 300 μmol / (m²·s)] tuaj yeem ua rau cov txiv hmab txiv ntoo zoo thiab tawm los. ib cheeb tsam ntawm chiehwa thiab eggplant.Chikuquan nce 5.3% thiab 15.6%, thiab eggplant nce 7.6% thiab 7.8%.Los ntawm LED teeb pom kev zoo thiab nws qhov kev siv zog thiab lub sijhawm ntawm tag nrho cov kev loj hlob lub sijhawm, cov nroj tsuag loj hlob tuaj yeem luv luv, kev lag luam tawm los, khoom noj khoom haus zoo thiab tus nqi ntawm cov khoom ua liaj ua teb tuaj yeem txhim kho, thiab kev ua haujlwm siab, txuag hluav taws xob thiab ntse zus tau tej cov chaw horticultural qoob loo yuav tsum tau paub.

Daim ntawv thov ntawm LED ntxiv lub teeb hauv kev cog qoob loo

Kev tswj cov nroj tsuag morphology thiab kev loj hlob thiab kev loj hlob los ntawm LED teeb qhov chaw yog ib qho tseem ceeb thev naus laus zis hauv kev cog qoob loo hauv tsev cog khoom.Cov nroj tsuag siab dua tuaj yeem nkag siab thiab tau txais lub teeb pom kev los ntawm photoreceptor systems xws li phytochrome, cryptochrome, thiab photoreceptor, thiab ua cov kev hloov morphological los ntawm intracellular messengers los tswj cov ntaub so ntswg thiab kabmob.Photomorphogenesis txhais tau hais tias cov nroj tsuag tso siab rau lub teeb los tswj kev sib txawv ntawm tes, kev hloov pauv ntawm cov qauv thiab kev ua haujlwm, nrog rau kev tsim cov ntaub so ntswg thiab cov kabmob, nrog rau kev cuam tshuam ntawm kev loj hlob ntawm qee cov noob, kev txhawb nqa ntawm apical dominance, inhibition ntawm lateral bud loj hlob, qia elongation. , thiab tropism.

Kev cog qoob loo cog qoob loo yog ib feem tseem ceeb ntawm kev ua liaj ua teb.Cov huab cua los nag tsis tu ncua yuav ua rau lub teeb tsis txaus nyob rau hauv qhov chaw, thiab cov yub tuaj yeem ua rau ntev, uas yuav cuam tshuam rau kev loj hlob ntawm cov zaub, paj sib txawv thiab kev loj hlob ntawm cov txiv hmab txiv ntoo, thiab thaum kawg cuam tshuam rau lawv cov qoob loo thiab zoo.Hauv kev tsim khoom, qee qhov kev tswj hwm kev loj hlob ntawm cov nroj tsuag, xws li gibberellin, auxin, paclobutrazol thiab chlormequat, yog siv los tswj kev loj hlob ntawm cov noob.Txawm li cas los xij, kev siv tsis tsim nyog ntawm cov tswj kev loj hlob ntawm cov nroj tsuag tuaj yeem yooj yim ua paug rau ib puag ncig ntawm cov zaub thiab cov chaw, tib neeg kev noj qab haus huv tsis zoo.

LED ntxiv lub teeb muaj ntau qhov tshwj xeeb zoo ntawm lub teeb ntxiv, thiab nws yog ib txoj hauv kev siv LED ntxiv lub teeb los tsa cov noob.Nyob rau hauv lub LED ntxiv lub teeb [25 ± 5 μmol / (m²·s)] sim ua nyob rau hauv lub teeb tsis tshua muaj [0 ~ 35 μmol / (m²·s)], nws tau pom tias lub teeb ntsuab txhawb kev elongation thiab kev loj hlob ntawm dib seedlings.Lub teeb liab thiab xiav lub teeb inhibit qhov kev loj hlob ntawm cov noob.Piv nrog rau lub teeb tsis muaj zog ntuj, qhov muaj zog ntawm cov yub index ntawm cov noob ntxiv nrog lub teeb liab thiab xiav tau nce 151.26% thiab 237.98%, feem.Piv nrog rau monochromatic lub teeb zoo, qhov Performance index ntawm cov noob muaj zog uas muaj cov xim liab thiab xiav nyob rau hauv kev kho mob ntawm cov teeb pom kev zoo ntxiv lub teeb tau nce 304.46%.

Ntxiv lub teeb liab rau dib seedlings tuaj yeem nce cov nplooj tiag tiag, thaj chaw nplooj, cog qhov siab, qia txoj kab uas hla, qhuav thiab tshiab zoo, muaj zog seedling Performance index, hauv paus vitality, SOD kev ua thiab soluble protein cov ntsiab lus ntawm dib seedlings.Ntxiv UV-B tuaj yeem ua rau cov ntsiab lus ntawm chlorophyll a, chlorophyll b thiab carotenoids hauv dib yub nplooj.Piv nrog rau lub teeb ntuj, ntxiv rau lub teeb liab thiab xiav LED tuaj yeem ua rau thaj tsam nplooj ntoos, qhuav teeb meem zoo thiab muaj zog index ntawm lws suav seedlings.Supplementing LED liab teeb thiab lub teeb ntsuab ho nce qhov siab thiab qia tuab ntawm lws suav seedlings.LED ntsuab lub teeb ntxiv kev kho lub teeb tuaj yeem ua rau muaj txiaj ntsig zoo ntawm cov txiv lws suav thiab cov txiv lws suav, thiab qhov hnyav thiab qhuav ntawm cov yub nce ntxiv nrog qhov nce ntawm lub teeb ntsuab ntxiv lub teeb siv, thaum lub qia tuab thiab muaj zog yub index ntawm txiv lws suav. seedlings tag nrho ua raws li lub teeb ntsuab ntxiv teeb.Lub zog nce ntxiv.Kev sib xyaw ua ke ntawm LED liab thiab xiav lub teeb tuaj yeem ua rau kom cov qia tuab, nplooj nplooj, qhov hnyav qhuav ntawm tag nrho cov nroj tsuag, hauv paus rau tua piv, thiab muaj zog seedling Performance index ntawm eggplant.Piv nrog rau lub teeb dawb, LED liab teeb tuaj yeem ua rau kom biomass ntawm cabbage seedlings thiab txhawb kev loj hlob elongation thiab nplooj nthuav dav ntawm cabbage seedlings.LED xiav lub teeb txhawb kev loj hlob tuab, qhuav teeb meem tsub zuj zuj thiab muaj zog yub index ntawm cabbage seedlings, thiab ua rau cabbage seedlings dwarf.Cov txiaj ntsig saum toj no qhia tau hais tias qhov zoo ntawm cov nroj tsuag cog qoob loo nrog lub teeb tswj kev siv tshuab yog pom tseeb heev.

Cov nyhuv ntawm LED ntxiv lub teeb rau kev noj haus zoo ntawm cov txiv hmab txiv ntoo thiab zaub

Cov protein, qab zib, organic acid thiab vitamin muaj nyob rau hauv txiv hmab txiv ntoo thiab zaub yog cov khoom noj khoom haus uas muaj txiaj ntsig zoo rau tib neeg kev noj qab haus huv.Lub teeb zoo tuaj yeem cuam tshuam rau VC cov ntsiab lus hauv cov nroj tsuag los ntawm kev tswj hwm cov haujlwm ntawm VC synthesis thiab decomposing enzyme, thiab nws tuaj yeem tswj cov protein metabolism thiab carbohydrate tsub zuj zuj hauv cov nroj tsuag horticultural.Lub teeb liab txhawb nqa carbohydrate tsub zuj zuj, kev kho lub teeb xiav yog qhov muaj txiaj ntsig zoo rau kev tsim cov protein, thaum ua ke ntawm lub teeb liab thiab xiav tuaj yeem txhim kho cov khoom noj khoom haus zoo ntawm cov nroj tsuag ntau dua li lub teeb monochromatic.

Ntxiv lub teeb liab lossis xiav LED tuaj yeem txo cov ntsiab lus nitrate hauv lettuce, ntxiv xiav lossis ntsuab LED teeb tuaj yeem txhawb kev sib sau ntawm cov suab thaj hauv lettuce, thiab ntxiv infrared LED teeb yog qhov tsim nyog rau VC nyob rau hauv lettuce.Cov txiaj ntsig tau pom tias qhov ntxiv ntawm lub teeb xiav tuaj yeem txhim kho VC cov ntsiab lus thiab soluble protein cov ntsiab lus ntawm txiv lws suav;Lub teeb liab thiab xiav xiav ua ke tuaj yeem txhawb cov suab thaj thiab cov kua qaub ntawm cov txiv lws suav, thiab qhov piv ntawm cov suab thaj rau cov kua qaub yog qhov siab tshaj plaws hauv qab xiav xiav ua ke;liab xiav ua ke lub teeb tuaj yeem txhim kho VC cov ntsiab lus ntawm dib txiv hmab txiv ntoo.

Cov phenols, flavonoids, anthocyanins thiab lwm yam khoom hauv cov txiv hmab txiv ntoo thiab zaub tsis tsuas yog muaj kev cuam tshuam tseem ceeb ntawm cov xim, tsw thiab cov khoom muaj nqis ntawm cov txiv hmab txiv ntoo thiab zaub, tab sis kuj muaj cov tshuaj antioxidant hauv ntuj, thiab tuaj yeem cuam tshuam lossis tshem tawm cov dawb radicals hauv tib neeg lub cev.

Siv lub teeb xiav LED los ntxiv lub teeb tuaj yeem ua kom cov ntsiab lus anthocyanin ntawm eggplant tawv nqaij los ntawm 73.6%, thaum siv LED teeb liab thiab kev sib xyaw ntawm lub teeb liab thiab xiav tuaj yeem ua rau cov ntsiab lus ntawm flavonoids thiab tag nrho phenols.Lub teeb xiav tuaj yeem txhawb nqa lycopene, flavonoids thiab anthocyanins hauv txiv lws suav.Kev sib xyaw ua ke ntawm lub teeb liab thiab xiav txhawb kev tsim cov anthocyanins rau qee qhov, tab sis inhibits cov synthesis ntawm flavonoids.Piv nrog rau kev kho lub teeb dawb, kev kho lub teeb liab tuaj yeem nce cov ntsiab lus anthocyanin ntawm lettuce tua, tab sis kev kho lub teeb xiav muaj cov ntsiab lus anthocyanin qis tshaj.Tag nrho cov ntsiab lus phenol ntawm nplooj ntsuab, nplooj liab doog thiab liab nplooj lettuce yog siab dua nyob rau hauv lub teeb dawb, liab-xiav ua ke lub teeb thiab xiav lub teeb kev kho mob, tab sis nws yog qhov qis tshaj nyob rau hauv lub teeb liab kho.Supplementing LED ultraviolet lub teeb los yog lub teeb txiv kab ntxwv tuaj yeem ua rau cov ntsiab lus ntawm phenolic tebchaw hauv nplooj lettuce, thaum ntxiv lub teeb ntsuab tuaj yeem ua rau cov ntsiab lus ntawm anthocyanins.Yog li ntawd, kev siv LED loj hlob lub teeb yog ib txoj hauv kev zoo los tswj cov khoom noj khoom haus zoo ntawm cov txiv hmab txiv ntoo thiab zaub hauv qhov chaw cog qoob loo horticultural.

Cov nyhuv ntawm LED ntxiv lub teeb rau kev tiv thaiv kev laus ntawm cov nroj tsuag

Chlorophyll degradation, poob protein sai thiab RNA hydrolysis thaum lub sij hawm cov nroj tsuag senescence yog manifested raws li nplooj senescence.Chloroplast yog qhov nkag siab zoo rau kev hloov pauv ntawm lub teeb sab nraud, tshwj xeeb tshaj yog cuam tshuam los ntawm lub teeb pom kev zoo.Lub teeb liab, lub teeb xiav thiab lub teeb liab-xiav ua ke yog qhov tsim nyog rau chloroplast morphogenesis, lub teeb xiav yog qhov tsim nyog rau kev sib sau ntawm cov hmoov txhuv nplej siab hauv chloroplasts, thiab, lub teeb liab thiab lub teeb liab liab muaj qhov tsis zoo rau chloroplast txoj kev loj hlob.Kev sib xyaw ua ke ntawm lub teeb xiav thiab lub teeb liab thiab xiav tuaj yeem txhawb nqa cov synthesis ntawm chlorophyll hauv cov nplooj nplooj dib, thiab kev sib xyaw ntawm lub teeb liab thiab xiav kuj tseem tuaj yeem ncua qhov attenuation ntawm nplooj chlorophyll cov ntsiab lus nyob rau theem tom ntej.Cov nyhuv no yog pom tseeb dua nrog qhov txo qis ntawm lub teeb liab piv thiab qhov nce ntawm lub teeb xiav piv.Cov ntsiab lus chlorophyll ntawm dib yub nplooj nplooj nyob rau hauv LED liab thiab xiav ua ke lub teeb kev kho mob yog qhov siab tshaj qhov uas nyob rau hauv fluorescent tswj lub teeb thiab monochromatic liab thiab xiav lub teeb kho.LED xiav lub teeb tuaj yeem ua rau kom cov chlorophyll a / b tus nqi ntawm Wutacai thiab ntsuab qej seedlings.

Thaum lub sij hawm senescence, muaj cytokinins (CTK), auxin (IAA), abscisic acid cov ntsiab lus hloov (ABA) thiab ntau yam kev hloov hauv enzyme kev ua.Cov ntsiab lus ntawm cov tshuaj hormones cog tau yooj yim cuam tshuam los ntawm lub teeb ib puag ncig.Cov teeb pom kev zoo sib txawv muaj cov kev cai sib txawv ntawm cov tshuaj hormones cog, thiab cov kauj ruam pib ntawm txoj kev teeb pom kev hloov pauv cuam tshuam nrog cytokinins.

CTK txhawb kev nthuav dav ntawm cov nplooj hlwb, txhim kho nplooj nplooj photosynthesis, thaum inhibiting cov dej num ntawm ribonuclease, deoxyribonuclease thiab protease, thiab ncua kev degradation ntawm nucleic acids, proteins thiab chlorophyll, yog li nws muaj peev xwm ua tau kom ncua cov nplooj senescence.Muaj kev sib cuam tshuam ntawm lub teeb thiab CTK-mediated txoj kev loj hlob, thiab lub teeb tuaj yeem txhawb kev nce qib ntawm endogenous cytokinin.Thaum cov ntaub so ntswg nyob rau hauv lub xeev ntawm senescence, lawv endogenous cytokinin cov ntsiab lus txo.

IAA feem ntau yog tsom rau hauv qhov chaw ntawm kev loj hlob muaj zog, thiab muaj cov ntsiab lus tsawg heev hauv cov ntaub so ntswg lossis cov kabmob.Violet lub teeb tuaj yeem ua rau muaj kev ua haujlwm ntawm indole acetic acid oxidase, thiab qib IAA qis tuaj yeem cuam tshuam qhov elongation thiab kev loj hlob ntawm cov nroj tsuag.

ABA feem ntau yog tsim nyob rau hauv cov ntaub so ntswg senescent, txiv hmab txiv ntoo paub tab, noob, stems, cov hauv paus hniav thiab lwm qhov chaw.ABA cov ntsiab lus ntawm dib thiab zaub qhwv nyob rau hauv kev sib xyaw ntawm lub teeb liab thiab xiav yog qis dua li ntawm lub teeb dawb thiab lub teeb xiav.

Peroxidase (POD), superoxide dismutase (SOD), ascorbate peroxidase (APX), catalase (CAT) yog qhov tseem ceeb dua thiab muaj teeb meem tiv thaiv enzymes hauv cov nroj tsuag.Yog tias cov nroj tsuag muaj hnub nyoog, cov dej num ntawm cov enzymes yuav txo qis sai.

Cov teeb pom kev sib txawv muaj qhov cuam tshuam loj rau cov nroj tsuag antioxidant enzyme kev ua ub no.Tom qab 9 hnub ntawm kev kho lub teeb liab, APX kev ua ub ua no ntawm rape seedlings nce zuj zus, thiab POD kev ua ub no poob.POD kev ua ntawm txiv lws suav tom qab 15 hnub ntawm lub teeb liab thiab lub teeb xiav yog siab dua li lub teeb dawb los ntawm 20.9% thiab 11.7%, feem.Tom qab 20 hnub ntawm kev kho lub teeb ntsuab, POD kev ua ntawm txiv lws suav yog qhov qis tshaj, tsuas yog 55.4% ntawm lub teeb dawb.Ntxiv 4h lub teeb xiav tuaj yeem ua rau muaj cov protein ntau ntxiv, POD, SOD, APX, thiab CAT enzyme cov dej num hauv nplooj dib ntawm cov yub theem.Tsis tas li ntawd, kev ua ub no ntawm SOD thiab APX maj mam txo nrog lub teeb ntev.Kev ua ntawm SOD thiab APX nyob rau hauv lub teeb xiav thiab lub teeb liab txo qis tab sis ib txwm siab dua li lub teeb dawb.Lub teeb liab irradiation txo qis peroxidase thiab IAA peroxidase kev ua ub no ntawm cov txiv lws suav nplooj thiab IAA peroxidase ntawm eggplant nplooj, tab sis ua rau cov peroxidase kev ua ntawm eggplant nplooj nce ho.Yog li, kev siv lub tswv yim tsim nyog LED ntxiv lub teeb pom kev zoo tuaj yeem ncua qhov kev loj hlob ntawm cov qoob loo cog qoob loo thiab txhim kho cov qoob loo thiab zoo.

Kev tsim kho thiab kev siv ntawm LED teeb pom kev zoo

Kev loj hlob thiab kev loj hlob ntawm cov nroj tsuag muaj kev cuam tshuam loj heev los ntawm lub teeb zoo thiab nws qhov sib txawv muaj pes tsawg leeg.Lub teeb pom kev zoo feem ntau suav nrog ntau lub ntsiab lus xws li lub teeb pom kev zoo piv, lub teeb siv, thiab lub sijhawm lub teeb.Txij li cov nroj tsuag sib txawv muaj cov kev cai sib txawv rau lub teeb thiab sib txawv kev loj hlob thiab kev loj hlob theem, qhov zoo tshaj plaws ua ke ntawm lub teeb zoo, lub teeb siv thiab lub teeb ntxiv lub sij hawm yuav tsum tau rau cov qoob loo cog.

 ◆Lub teeb spectrum ratio

Piv nrog lub teeb dawb thiab ib lub teeb liab thiab xiav, kev sib xyaw ntawm LED liab thiab xiav lub teeb muaj qhov zoo ntawm kev loj hlob thiab kev loj hlob ntawm dib thiab cabbage seedlings.

Thaum qhov sib piv ntawm lub teeb liab thiab xiav yog 8: 2, cov nroj tsuag qia tuab, qhov siab ntawm tsob ntoo, tsob ntoo qhuav qhov hnyav, qhov hnyav tshiab, qhov muaj zog ntawm cov yub index, thiab lwm yam, tau nce ntau, thiab nws kuj muaj txiaj ntsig zoo rau kev tsim cov chloroplast matrix thiab basal lamella thiab cov zis ntawm assimilation teeb meem.

Kev siv kev sib xyaw ua ke ntawm liab, ntsuab thiab xiav zoo rau cov taum liab liab yog qhov muaj txiaj ntsig zoo rau nws cov khoom qhuav qhuav, thiab lub teeb ntsuab tuaj yeem txhawb nqa cov teeb meem qhuav ntawm cov taum liab sprouts.Kev loj hlob yog pom tseeb tshaj plaws thaum qhov piv ntawm liab, ntsuab thiab xiav lub teeb yog 6: 2: 1.Cov taum liab sprout seedling zaub hypocotyl elongation nyhuv yog qhov zoo tshaj plaws nyob rau hauv lub liab thiab xiav lub teeb piv ntawm 8: 1, thiab taum liab sprout hypocotyl elongation yog obviously inhibited nyob rau hauv lub liab thiab xiav lub teeb piv ntawm 6: 3, tab sis lub soluble protein. cov ntsiab lus yog qhov siab tshaj.

Thaum qhov ratio ntawm liab thiab xiav lub teeb yog 8: 1 rau loofah seedlings, lub zog yub index thiab soluble qab zib ntsiab lus ntawm loofah seedlings yog siab tshaj.Thaum siv lub teeb pom kev zoo nrog qhov sib piv ntawm lub teeb liab thiab xiav ntawm 6: 3, chlorophyll cov ntsiab lus, chlorophyll a / b ratio, thiab cov ntsiab lus ntawm cov protein soluble ntawm cov noob loofah yog qhov siab tshaj plaws.

Thaum siv 3: 1 piv ntawm liab thiab xiav lub teeb rau celery, nws muaj peev xwm txhawb kev nce ntawm celery cog qhov siab, petiole ntev, nplooj naj npawb, qhuav teeb meem zoo, VC ntsiab lus, soluble protein cov ntsiab lus thiab soluble qab zib cov ntsiab lus.Hauv kev cog qoob loo txiv lws suav, nce qhov kev faib ua feem ntawm LED xiav lub teeb txhawb kev tsim cov lycopene, pub dawb amino acids thiab flavonoids, thiab nce qhov kev faib ua feem ntawm lub teeb liab txhawb kev tsim cov titratable acids.Thaum lub teeb nrog qhov sib piv ntawm liab thiab xiav lub teeb rau lettuce nplooj yog 8: 1, nws muaj txiaj ntsig zoo rau kev sib sau ntawm carotenoids, thiab txo cov ntsiab lus ntawm nitrate thiab nce cov ntsiab lus ntawm VC.

 ◆Lub teeb siv

Cov nroj tsuag loj hlob nyob rau hauv lub teeb tsis muaj zog yog qhov cuam tshuam rau photoinhibition ntau dua li nyob rau hauv lub teeb muaj zog.Lub net photosynthetic npaum li cas ntawm lws suav seedlings nce nrog qhov nce ntawm lub teeb siv [50, 150, 200, 300, 450, 550μmol / (m²·s)], qhia ib tug qauv ntawm thawj zaug nce thiab tom qab ntawd txo, thiab ntawm 300μmol / (m². ·s) kom ncav cuag qhov siab tshaj plaws.Cov nroj tsuag qhov siab, nplooj nplooj, cov ntsiab lus dej thiab VC cov ntsiab lus ntawm lettuce tau nce ntau hauv qab 150μmol / (m²·s) kev siv lub teeb.Hauv qab 200μmol / (m²·s) lub teeb siv kev kho mob, qhov hnyav tshiab, tag nrho qhov hnyav thiab cov ntsiab lus ntawm cov amino acid dawb tau nce ntxiv, thiab nyob rau hauv kev kho mob ntawm 300μmol / (m²·s) lub teeb siv, nplooj nplooj, cov ntsiab lus dej. , chlorophyll a, chlorophyll a + b thiab carotenoids ntawm lettuce tau poob tag nrho.Piv nrog rau qhov tsaus ntuj, nrog rau qhov nce ntawm LED loj hlob lub teeb siv [3, 9, 15 μmol / (m²·s)], cov ntsiab lus ntawm chlorophyll a, chlorophyll b, thiab chlorophyll a + b ntawm dub taum sprouts nce ntau.Cov ntsiab lus VC yog siab tshaj ntawm 3μmol / (m²·s), thiab cov protein soluble, soluble qab zib thiab sucrose cov ntsiab lus yog siab tshaj ntawm 9μmol / (m²·s).Nyob rau hauv tib qhov kub thiab txias, nrog rau qhov nce ntawm lub teeb siv [(2 ~ 2.5) lx × 103 lx, (4 ~ 4.5) lx × 103 lx, (6 ~ 6.5) lx × 103 lx], lub sij hawm yub ntawm cov kua txob seedlings luv luv, cov ntsiab lus ntawm soluble qab zib nce, tab sis cov ntsiab lus ntawm chlorophyll a thiab carotenoids maj mam txo.

 ◆Lub sijhawm teeb

Kev ua kom lub sij hawm ntev lub teeb kom zoo tuaj yeem txo cov teeb pom kev zoo uas tshwm sim los ntawm kev siv lub teeb tsis txaus rau qee qhov, pab kom cov khoom tsim photosynthetic ntawm horticultural qoob loo, thiab ua tiav cov txiaj ntsig ntawm kev nce yield thiab txhim kho zoo.VC cov ntsiab lus ntawm sprouts pom ib tug maj mam nce nrog lub sij hawm ntawm lub teeb (0, 4, 8, 12, 16, 20h / hnub), thaum lub free amino acid cov ntsiab lus, SOD thiab CAT kev ua ub no tag nrho pom ib tug txo qis.Nrog rau lub sijhawm ntev ntawm lub teeb (12, 15, 18h), qhov hnyav tshiab ntawm Suav cabbage nroj tsuag tau nce ntau.Cov ntsiab lus ntawm VC nyob rau hauv nplooj thiab stalks ntawm Suav cabbage yog qhov siab tshaj plaws ntawm 15 thiab 12h, feem.Soluble protein cov ntsiab lus ntawm nplooj ntawm Suav cabbage poob maj mam, tab sis lub stalks yog siab tshaj tom qab 15h.Soluble qab zib cov ntsiab lus ntawm Suav cabbage nplooj maj mam nce, thaum lub stalks yog siab tshaj plaws ntawm 12h.Thaum qhov piv ntawm lub teeb liab thiab xiav yog 1: 2, piv nrog 12h lub teeb lub sij hawm, 20h lub teeb kev kho mob txo cov txheeb ze cov ntsiab lus ntawm tag nrho cov phenols thiab flavonoids nyob rau hauv ntsuab nplooj lettuce, tab sis thaum lub ratio ntawm liab thiab xiav lub teeb yog 2: 1, 20h lub teeb kev kho mob tau nce qhov txheeb ze cov ntsiab lus ntawm tag nrho cov phenols thiab flavonoids nyob rau hauv ntsuab nplooj lettuce.

Los ntawm cov saum toj no, nws tuaj yeem pom tias cov qauv sib txawv ntawm lub teeb muaj qhov sib txawv ntawm photosynthesis, photomorphogenesis thiab carbon thiab nitrogen metabolism ntawm ntau hom qoob loo.Yuav ua li cas kom tau txais lub teeb pom kev zoo tshaj plaws, kev teeb tsa lub teeb pom kev zoo thiab kev tsim cov tswv yim tswj kev txawj ntse xav tau cov hom nroj tsuag raws li qhov pib, thiab, kev hloov kho kom tsim nyog yuav tsum tau ua raws li cov khoom xav tau ntawm cov qoob loo cog qoob loo, cov hom phiaj tsim khoom, cov khoom tsim, thiab lwm yam. kom ua tiav lub hom phiaj ntawm kev txawj ntse tswj ntawm lub teeb ib puag ncig thiab cov qoob loo zoo thiab muaj txiaj ntsig zoo nyob rau hauv kev txuag hluav taws xob.

Cov teeb meem uas twb muaj lawm thiab kev cia siab

Qhov txiaj ntsig tseem ceeb ntawm LED loj hlob lub teeb yog tias nws tuaj yeem ua kom ntse ua ke hloov kho raws li qhov xav tau ntawm cov yam ntxwv photosynthetic, morphology, zoo thiab tawm los ntawm cov nroj tsuag sib txawv.Cov qoob loo sib txawv thiab lub sijhawm loj hlob sib txawv ntawm tib cov qoob loo tag nrho muaj cov kev xav tau sib txawv rau lub teeb pom kev zoo, lub teeb siv zog thiab photoperiod.Qhov no yuav tsum muaj kev txhim kho ntxiv thiab txhim kho kev tshawb fawb lub teeb pom kev los tsim lub teeb pom kev loj loj database.Ua ke nrog kev tshawb fawb thiab kev txhim kho cov teeb pom kev zoo, qhov siab tshaj plaws ntawm LED cov teeb ntxiv hauv kev ua liaj ua teb tuaj yeem ua tiav, kom txuag tau zog zoo dua, txhim kho kev tsim khoom thiab cov txiaj ntsig kev lag luam.Daim ntawv thov ntawm LED loj hlob lub teeb nyob rau hauv qhov chaw horticulture tau pom muaj zog vitality, tab sis tus nqi ntawm LED teeb pom kev zoo equipments los yog pab kiag li lawm yog tus kuj siab, thiab ib-lub sij hawm peev yog loj.Cov kev xav tau ntawm lub teeb ntxiv ntawm ntau cov qoob loo nyob rau hauv ib puag ncig sib txawv tsis meej, qhov ntxiv lub teeb spectrum, qhov tsis tsim nyog siv thiab lub sij hawm loj hlob teeb yuav inevitably ua rau muaj teeb meem ntau yam hauv daim ntawv thov kev loj hlob teeb pom kev lag luam.

Txawm li cas los xij, nrog kev nce qib thiab kev txhim kho thev naus laus zis thiab txo cov nqi tsim khoom ntawm LED loj hlob lub teeb, LED ntxiv teeb pom kev zoo yuav siv dav dua hauv cov chaw ua haujlwm horticulture.Nyob rau tib lub sijhawm, kev txhim kho thiab kev vam meej ntawm LED ntxiv lub teeb ci thev naus laus zis thiab kev sib txuas ntawm lub zog tshiab yuav ua rau muaj kev loj hlob sai ntawm cov chaw ua liaj ua teb, tsev neeg kev ua liaj ua teb, kev ua liaj ua teb hauv nroog thiab chaw ua liaj ua teb kom tau raws li cov neeg xav tau rau cov qoob loo cog qoob loo hauv ib puag ncig tshwj xeeb.